Justin Ross closed QPID-5334.

> Low throughput with thousands of queues
> ---------------------------------------
>                 Key: QPID-5334
>                 URL: https://issues.apache.org/jira/browse/QPID-5334
>             Project: Qpid
>          Issue Type: Improvement
>          Components: C++ Broker, JMS AMQP 0-x
>    Affects Versions: 0.24
>         Environment: Broker: Linux 2.6.32 64bit
> Client: Windows 7, Java 1.7.0_21 64bit
>            Reporter: Flavio Baronti
>            Priority: Major
>              Labels: performance
>         Attachments: JMSGenerator.java, JMSReceiver.java
> I have an use case where I need to create hundreds of thousands of queues,
> each one subscribed to a different topic (therefore I have as many topics
> as queues).
> I set up a test with a single producer generating data on a randomly
> chosen topic, and a receiver retrieving data from the queues (and throwing
> it away).
> I'm using the JMS api, and doing the obvious thing makes the throughput
> drop dramatically from 10k msg/sec with a single topic/queue (around the
> top my network adapter can sustain) to 20 msg/sec with 100k topics/queues.
> I found out that I can recover performance by using more JMS sessions and
> connections - e.g. create 4 connections with 100 sessions each, and
> randomly distributing the receiving queues on them.
> This however is less than ideal, since with the JMS client a thread is
> created for each session, I can manage the workload with 1 thread only when 
> it's over a single queue.

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